Ultrasonic testing is a widely used non-destructive test method to check cast parts for invisible defects such as blowholes, pores or cracks. Since the acoustic properties of the material change if those casting defects are present, the ultrasonic sound pulse is reflected and sent back to the test head.Especially if components have complex geometries, ultrasonic testing is often carried out manually. By automating the process with the help of robots, test costs and test time can be reduced and measurements made reproducible.